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Nov 6, 2018 at 17:08 comment added suckrates You are right. I listened to the video again and he says "we are going to select MOST of our controls" among women that have had hip fractures. So women that have had hip fractures are only more likely to be selected, not deterministically selected like I understood.
Nov 6, 2018 at 17:05 vote accept suckrates
Nov 6, 2018 at 17:03 history answered Noah CC BY-SA 4.0